Improvement in nailing-machines



2 Sheets-Sheet 1.

Nailing-Machine.

No. 252,997. Patented Dec. 30,1879.

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Witnesses: Inventor:

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2 Sheets-Sheet 2. R. C. LAMBERT. 4 Nailing-Machine.

Patented Dec. 30, 187-9.

v y Y Mtnesses N. PETERS. PHOTO-UTNOGRAPHER. WASNINGTO UNITED -;T.A.TEsPATENT OEEIoE.

RICHARD O. LAMBERT, OF BRIDGEWATER, MASSACHUSETTS.

IMPROVEMENT lN MAILING-MACHINES.

Specification forming part of Letters Patent No. 222,997, dated December30, 1879; application filed November 1, 1879.

To all whom it may concern:

Be it known that I, RICHARD O. LAMBERT, of Bridgewater, in the county ofPlymouth and State of Massachusetts, have invented certain new anduseful Improvements in Nailing-Machines, of which the following, takenin connection with the accompanying drawin gs, is a specification.

My invention relates to that class of nailing-machines which are usedprincipally in the manufacture of boots and shoes for securing theuppers to the soles, (though it may be used for other purposes,) andmore especially to the devices for separating the nails and placing themin position to receive the blow of the driver; and it consists, first,in the combination, with a driving-plunger adapted to force the nailinto the material to be secured, of a cylindrical hopper arranged withits axis in an inclined position, and provided with a disk having cutinto its peripheral edge a series of radial slots having parallel sides,and of sufficient width to allow the free passage of the body of thenail, but not wide enough to permit the head to pass through, and havingthe stock around said slots cut away to allow the heads of the nails todrop below the upper surface of the disk, said disk beingmounted upon acentral shaft in such a manner that it is free to revolve within saidhopper, an opening cut through the side of said hopper of such a shapeand in such a position relative to said disili that nails may bedischarged through said opening from either one of said slots a they aresuccessively brought into conjunction therewith, as will be furtherdescribed.

It furher consists in the combination of a vertically-reciprocatingdriving-plun ger, a cylindrical hopper arranged with its axis in aninclined osition, and provided with a movable bottom having a series ofradial slits cut in its peripheral edge, an opening through the side ofthe hopper so located relative to said bottom of the hopper and of suchshape that nails suspended in either of said slots may be discha -i'gedthrough said opening, and an inclined chute leading from said opening toa point in close proximity to the driver,

whereby the nails discharged from the hopper may be conveyed to aposition to be struck by the driver in its descent and be driven intothe material. V

It further consists in the combination of a cylindrical hopper arrangedwith its axis in an inclined position, a slotted bottom adapted to berotated therein, and an operating-wheel mounted upon the shaft of saidrotating bottom, arranged in position to be operated by the finger orthumb of the hand which holds the instrument in position for operation.

It further consists in the combination, with a vertically-reciproeatingdriving-plunger and an inclined chute for conveying the nails from thehopper to the setting-tools, of a pivoted stop placed at the lower endof said chute, and having its end toward the chute forked or notched, soas to partially surround the lower or forward nail in the linedescending the chute, said stop being held in its normal position by aspring, which yields when the driver descends, to allow said stop tovibrate about its pivot and release the nail, and allow it to be carrieddownward by the driver.

It further consists in the combination of a vertically-reciprocatingdriving-plunger, an inclined chute for conveying the nails from thehopper to the setting-tools, a pivoted and forked or notched stop tolimit the forward movement of the nail descending the chute, and a pairof spring guide-fingers arranged to bear upon opposite sides of the nailbeing driven at right angles to the plane of movement of the naildescending the chute and of the pivoted stop, as will be described.

In the drawings, Figure 1 is a front elevation of a tool embodying myinvention. Fig. 2 is a side elevation. Fig. 3 is a vertical section online 00 a; on Fig. 1. Fig. 4: is a partial vertical section on line y yon Fig. 3. Fig. 5 is a section on the irregular line 2 2 on Fig. 3, andFi 6 is a section on line 1) v on Fig. 3.

A is the tubular handle and=-frame of the machine, in which is mountedthe drivingplunger B, carrying in its lower end the steel driving-toola, and surrounded by the spring I), which serves to raise the driverafter it has been depressed and hold it in such raised position till itreceives another blow.

O and O are two brackets or arms secured upon the tubular handle A, andforming at their outer ends bearings for the inclined shaft D, havingsecured thereon the Wheel E, in the outer rim of which are set a seriesof upwardly-projecting pins, 0 c, by means of which said wheel and itsshaft may be intermittently revolved by the thumb or finger of theoperators hand, in which he holds the tubular handleA in presenting itto the work. F is a thin circular disk, firmly secured upon the shaft D,and having cut through its peripheral edge a series of radial slots, cld, of such a width as to allow the passage of the body of the nailsplaced thereon, but too narrow to permit the heads of the nails to passthrough, said disk being made of a diameter to just fill and revolvefreely within the stationary cylindrical hopper G, which is made fastupon the arm 0, and has cut through one side thereof an openingsufficient to allow the free passage of a nail suspended by its head ina position substantially parallel with the axis of said disk and hopper,at which point is secured one end of the inclined chute H, the oppositeend of which is attached to the tubular handle A, nearits lower end,through the side of which is cut a slit through which" the nail may passfrom the chute to a position beneath the driving-tool a.

Directly opposite the lower end of the chute H is pivoted to the tube Athe short lever e, the inner end of which is notched, as shownin Fig. 6,so as to partially surround the body of the nail and support it by itshead when it has left the chute and is in position beneath the driver,as shown at f in Fig. 3, the outer end of said stop-lever being actedupon by the spring g to maintain said stop in its normal position, withthe upper surface of its inner arm on a level, or nearly so, with thatportion of the lower end of the chute H upon which the under side of thenail-head bears, so that the nail will slide directly from the chuteonto the lever 0, where it is held suspended till the driver comes incontact with its head and forces it downward, when the lever 0 is madeto move about its pivot-pin 71. against the tension of the spring g,till its inner end swings from under the nail-head and out of the pathof the driver a, in which position said lever is held by the driver tillthe driver rises above it, when the tension of the spring g causes it toassume its normal position again, ready to receive the next nail in thecolumn or line descending the chute, which has been held back by saiddriver while making its descent and rising again, but is now released bythe lower end of said driver rising above the head of the nail.

I I are a pair of spring guide-fingersattached to the tube A, uponopposite sides thereof, the lower ends of which play into slots formedin the lower end of said tube at rightangles to the slot through whichthe nails enter the tube from the chute, said spring-fingers serving todirect the nail in its downward motion while being driven till its pointhas entered the material, when they spring apart to allow the head ofthe nail to pass.

The nails to be used are placed in the hopper G in bulk, resting uponthe slotted disk F, and as said disk is intermittently moved about itsaxis, more or less of the nails fall through the slots at d, and hangtherefrom by their heads, and \vheneverone of said slots d (I, whichhave nails suspended therein, comes in line with the upper end of thechute H, the nails contained in said slot will be discharged into thechute to aid in keeping up the supply of'nails to the driver.

The-driving-plunger in the tool shown is designed to be driven downwardby a blow from a hammer in a well-known manner, and is guided and keptfrom turning in the tube A by the pin 6 set in said plunger, andprojecting into the slot j in the side of said tube, said pin and slotalso serving to limit the upward movement of the plunger.

It is obvious that my improvements are equally applicable to machines inwhich the driver is operated automatically, and therefore I do not wishto limit myself to their use. in a hand-tool, so called. The uppersurface of the disk F, immediately contiguous to the slots cl 0?, is cutaway to a sufficient depth to allow the heads of the nails to drop belowthe upper surface of said disk, as shown at d d, so. that nails lyingacross said slots will not prevent the nails suspended therein fromsliding out into the chute, which is a very important item.

What I claim as new, and desire to secure by Letters Patent of theUnited States, is-

l. The combination, in a machine for separating and driving nails, of afixed or stationary cylindrical hopper, having a slot cut through itscylindrical wall, adapted to permit the passage of a nail sidewise, anda movable bottom or disk, having a series of radial slots cut in itsperipheral edge, and adapted to be rotated within said hopper,substantially as and for the purposes described.

2. In an apparatus for separating nails, the combination of the hopperG, provided with an opening through its side for the passage of a nail,and placed in an inclined position, the radially-slotted movable bottomF, adapted to be rotated within said hopper, and the inclined chute H,adapted to convey the nails successively from said hopper to the pointwhere they are to be used, substantially as and for the purposedescribed.

3. The combination of the driver B a, the fixed cylindrical hopper Gr,placed in an in clined position, and provided with an opening for thepassage of a nail therefrom, the radiall y-slotted movable bottom F, andthe inclinedchute H, leading from said hopper to a point beneath thedriving-plunger, substantially as described.

4.. The combination of the hopper Gr, slotted movable bottom F, shaft1), and operatingwheel E, all arranged and adapted to operatesubstantially as and for the purposes described.

5. The combination of the driver B a, inclined chute H, pivotedstop-lever 6, having its inner end forked or notched, as shown, and thespring g, all arranged and adapted to operate substantially asdescribed.

6. The combination of the driver B a, the inclined chute H, pivotedstop-lever 6, having its inner end forked or notched, as shoWn,-thespring g, and the two spring guide-fingers I I, all arranged and adaptedto operate substantially as described.

RICHARD O. LAMBERT.

Witnesses:

O. H. Dom), N. O. LOMBARD.

